FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe: www.schalltechnik-mm.de
Büro f. Schalltechnik BBA Plus 120 foam absorber
BBA Plus 120
PTB reference data
Original description
Büro f. Schalltechnik BBA Plus 120 foam absorber
Material properties
Manufacturer: Büro f. Schalltechnik
Thickness: 120 mm, 240 mm
Backing: resonance absorber
Surface: open-cell flexible foam
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
1.06
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 1.00 | 1.15 | 1.05 | 1.05 | 1.10 | 1.05 |
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| Compare | Value | |
|---|---|---|
| 240 mm | αw1.06 | |
| 120 mm | αw0.90 |
Dimensions: 1000 x 600 x 240 mm
